My friend and I were chatting at a party last night, and she told me something fascinating. "I was once dating a guy who had slept with 16 other women," she told me. "I had only slept with one other guy." At first, she was intimidated by his sexual experience--until she realized that he had only hooked up with each woman a few times, while she had had sex with her last boyfriend hundreds of times over their three-year relationship.